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The offence happened between 4.30pm and 5pm on Monday 1. The man first visited the area to ask about window cleaning at about noon the same day.

He is white, aged between 20 and 24, about 5ft 2ins to 5ft 8ins, of slim build and with short, tidy brown hair. He spoke with a local accent and was wearing black trousers. He did not appear to have window-cleaning equipment.

Anyone who saw a man matching that description or who has information about the offence should call Derbyshire Police on 101, quoting crime reference 36809/14.